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authorchai <chaifix@163.com>2018-08-24 20:26:18 +0800
committerchai <chaifix@163.com>2018-08-24 20:26:18 +0800
commit106dfe48c40fdb24b7f5e8a84c992d15363a38d9 (patch)
tree575ed2df988e37c16d86528c85b9aea5f9755f3e /src/libjin/3rdparty/Box2D/Collision/Shapes/b2EdgeShape.h
parent06fc5e860e3a0ff6a325394fa01c42fb768a058e (diff)
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-/*
-* Copyright (c) 2006-2010 Erin Catto http://www.box2d.org
-*
-* This software is provided 'as-is', without any express or implied
-* warranty. In no event will the authors be held liable for any damages
-* arising from the use of this software.
-* Permission is granted to anyone to use this software for any purpose,
-* including commercial applications, and to alter it and redistribute it
-* freely, subject to the following restrictions:
-* 1. The origin of this software must not be misrepresented; you must not
-* claim that you wrote the original software. If you use this software
-* in a product, an acknowledgment in the product documentation would be
-* appreciated but is not required.
-* 2. Altered source versions must be plainly marked as such, and must not be
-* misrepresented as being the original software.
-* 3. This notice may not be removed or altered from any source distribution.
-*/
-
-#ifndef B2_EDGE_SHAPE_H
-#define B2_EDGE_SHAPE_H
-
-#include "Box2D/Collision/Shapes/b2Shape.h"
-
-/// A line segment (edge) shape. These can be connected in chains or loops
-/// to other edge shapes. The connectivity information is used to ensure
-/// correct contact normals.
-class b2EdgeShape : public b2Shape
-{
-public:
- b2EdgeShape();
-
- /// Set this as an isolated edge.
- void Set(const b2Vec2& v1, const b2Vec2& v2);
-
- /// Implement b2Shape.
- b2Shape* Clone(b2BlockAllocator* allocator) const override;
-
- /// @see b2Shape::GetChildCount
- int32 GetChildCount() const override;
-
- /// @see b2Shape::TestPoint
- bool TestPoint(const b2Transform& transform, const b2Vec2& p) const override;
-
- /// Implement b2Shape.
- bool RayCast(b2RayCastOutput* output, const b2RayCastInput& input,
- const b2Transform& transform, int32 childIndex) const override;
-
- /// @see b2Shape::ComputeAABB
- void ComputeAABB(b2AABB* aabb, const b2Transform& transform, int32 childIndex) const override;
-
- /// @see b2Shape::ComputeMass
- void ComputeMass(b2MassData* massData, float32 density) const override;
-
- /// These are the edge vertices
- b2Vec2 m_vertex1, m_vertex2;
-
- /// Optional adjacent vertices. These are used for smooth collision.
- b2Vec2 m_vertex0, m_vertex3;
- bool m_hasVertex0, m_hasVertex3;
-};
-
-inline b2EdgeShape::b2EdgeShape()
-{
- m_type = e_edge;
- m_radius = b2_polygonRadius;
- m_vertex0.x = 0.0f;
- m_vertex0.y = 0.0f;
- m_vertex3.x = 0.0f;
- m_vertex3.y = 0.0f;
- m_hasVertex0 = false;
- m_hasVertex3 = false;
-}
-
-#endif